Engine.



UNITED sTATEs PATENT OFFICE.

EDWARD A. JOHNSTON, 0F CHICAGO, ILLINOIS, ASSIGNOR T0 INTERNATIONALHARVESTER CORPORATION, A CORPORATION OF NEW JERSEY.

ENGINE.

. Specification of Letters Patent.

.Patented Jan. 29, 1918.

To alt whom it may concern: A

Be it known that I, EDWARD A. Jonrvs'ron, a citizen of thc UnitedStates, resldm at Chicago, in the county of Coolr'and tate of Illinois,have invented certain new and useful Improvements in Engines, of whichthe following is a full, clear, and exact specification.

This invention relates to engines, and more particularly to auxiliaryengines for starting larger ones.

The main object of the invention is to con trol automatically thestarting power developed by and transmitted from the startingkengine tothe larger engine to be started.

-nother object is to change the automatic control to manual control, andvice versa, at Wili. A

These objects are accomplished by providing a starting engine with meansfor controlling the supply of actuating fluid there to, means forautomatically controlin the action of said first means, and means werebythe automatic control can be changed to manuall control7 and vice'versa. The invenof drawings in whichiFigurel 1sv a-side elevation of a.starting engine embod ing my invention and showingl the'iy W eel of alarger engine to be started thereby.;

Fig. 2 is a detail sectional view taken along the line 2-2' of Fig. 1;and

Fig. 3 is a fragmentary view of thevuel mixture intake pipe leading tothe inlet l vul-ve of the engine and showing the general arrangement andcontrol parts of the mixture 'throttling valve.

The various novel features of my invention will be apparent from thefollowing description and drawings, and will be par-4 ticula rly s etforth' in the appended claims.

It is a well-known fact that it is a difficult matter 'to` manually'start gas engines of large capacity, it 'being necessary that engines ofcertain capamty above a certain minimum be started 'by-means of a smallauxiliary' starting unit. To illustrate my inventioml'have show-n' theiiy wheel 10 of a relatively large eng-ine to be started, which flywheel'is engaged under starting conditions by'v rotating -frictional element11 of the auxirl ry'stiirtmg engine 12. As Shown,

.this auxiliary starting engine takes the form of anriternal crurthrustionl engine having e tionis' illustrated on the accompanyingsheetby a smaller gear 18 mounted upon and secured to the crank shaft 19of the starting engine. The gear 17, with its sleeve 16, ro-

tates upon a stationary shaft 20, from which it is separated by suitableBabbitt metal 21, said Shaft being retained in supporting portions ofthe engine housing. Mounted upon one portion of the sleeve 16 is aspider frame 22, 1n which is secured the rotating frio tional element 11and which has projections 23 which interlock with projections 24 of thesleeve 16 by means ot which a rotating movement is transmitted from thegear 17 to the rotating frictional element 11.

The auxiliary starting engine 12 as a whole is pivotally mounted at 25upon a suitable base 26 which', if desired, may be the base of the mainengine to be started. The auxiliary engine 12 may be actuated in a.mannen suchethat therrotatingfrictional element 11 thereof may approachand recede from the iy whecli of the engine to be started by means of ahand operatedlever 27 pivotally mounted at 28 on .an ear 29 on the base26, said lever having a pivotal connection with.an adjustable link 30,one end of which is connected at 31 to a suitable ear formed on the caseof the auxiliary ene gine 12. As shown in Fig, `1, the frictionalrotating element 11 is out of engagement.'

'rotated in a reverse manner about its piv- 'otal point 25, causing thedisengagement of the rotating. element; 11 and flywheel 1 0.

Located within'V the' fuel-conducting pi e 14 which leads to'thercylinderl of tile loo valve 35 mounted uponv a pin 36, to one endof'which is secured an operating handle 37 Vhaving an earBS, to which issecured a link- 39, one end of which is connected to one end of arelatively stiff spring 40, the other end of which spring 4041sconnected to an adjustable stud 411 mounted in the base 26. Normally themixture throttling valve 35 is pressed 1n one of its extreme positionsby a properly arranged spring 42, one end .of which engages a projectioni3 of the handle 37 which projection engages an adjustable stop la whichlimits the closing move ment 'of the mixture thrcttling valve when it isin one of its normal extreme positions, j

When the auxiliary engine is in operation the liquid fuel is drawn froma'ny suitable source 45, by the suction of the engine, through aA fuelport 46, which is controlled by `a puppet valve 47, which puppet valvealso controls the air supply through conduit 48. The mixture, liquidfuel and air, passes up through the pipe i4 and the quantity thereof iscontrolled by the mixture throttling valve 35; that is to say, as themixture thrcttling valve 35 is opened more and more, a greater quantityof fuel is permitted to pass thev same and into the engine, theexplosion of which greater quantity increases the power developed by theauxiliary starting engine. It is of importance that a relatively greatpower be developed by the auxiliary starting engine when the rotatingfrictional element l1 engages the Hy wheel 10 of the engine to bestarted. i To accomplish this result the connection including the rod39, spring 40, and stud 41 is provided whereby, when the rotatablefriction element 1l is pressed toward the liy wheel 10, by raising thelever 27, the mixture throttling valve 35 is automatically opened agreater amount, thereby permitting a greater quantity of fuel to passinto the engine for developing the increased amount of wer which isdeveloped in and transmitted rom the auxiliary starting engine to thefly wheel ofthe engine to be started. The uantity of fuel mixturepass-.-

ing the mixture throttling valve 35 may also 4be controlled 'manually byactuating the handle 37 regardless ofthe automatic actuation of themixture throttling valve to vary the quantity of mixture supply to theengine. Let it be assumed that the rotating` frictional element `.l1 isin engagement :with the ily wheel 10 and the mixture throttling valve isopened a certain amount to permit a certain quantity of mixture tobesupplied to the starting engine. 4With these conditions existing, if areater quantity of fuel mixture is desired, t e same'is made possible byrotating the mixture throttling valve 35 in the same direction an added4amount by properly moving the handle 37. In like manner the quantity ofmixture passing the mixture throttlmg valve 35 may be def nauwe land itis my intention to cover all such modii direction. lt is seen,therefore, that as the auxiliary starting engine-is moved toward the.engine to be started the developed power of the auxiliary engine isautomatically in creased, and as said auxiliary engine is moved from thelarge engine to be started the developed power is decreased; also thatthe automatic control can be changed into manual control, and the manualcontrol into automatic control at will.

It isl evident that there may be various modifications of the inventionother than that here particularly shown and described,

ications which do not depart from .the spirit' and scope of my inventionas set forth in the following claims.

What I claim as new is:

l. 'In combination, an engine to be started, a pivotally mountedauxiliary starting en- Eine movable toward and from the engme to estarted, and means by which the power of the starting en ine isautomatically increased as it is swung edil-y about its pivot toward theengine to be started.

2. In combination', an engine to be started, a pivotallymounted'auxiliary starting engine movable toward and from the engine tobe started, and means by which the power of the starting engine isautomatically de creased as it is swung bodily about its pivot from theengine to be started. y

'3. An internal combustion engine' used for starting purposes andadapted to be moved, said engine having a valve to control the passageof a combustible fuel, and automatic means for varying the opening ofsaid valve to permit a varied quantity of combustible fuel to passas'the engine is moved bodily.

4'. An internal combustion engine used for starting purposes and adaptedto be moved, said engine having a cylinder, a Asource of combustiblefuel supply, a valve for controlling the supply of combustible fuelfromsaid source to the cylinder, and means whereby said valve is openedautomatically as the engine is moved bodily in one direc; tion and movedtoward closed position when 115 'the engine is movedbodily in anotherdi` rection. l

5'. In combination, an engine to be started, a controlled auxiliarystarting engine, l the developed power of which isfautomati- 120 callyvaried as the distance between said engines is varied, and means forchanging the control from automatic to manual.

6. In combination, a base, an engine pivotally mounted thereon, andmeansby which 125 the power of the engine is automatically l Qtally moimtedthereon and lumng n mix no ture throttling valve, means for swingingsaid engine about its pivotal point, an

means for automatically opening and closing said valve as said engine ismoved about its pivotal point,

8. In combination, a tese, an engine piv- 'otally mounted thereon andhaving a mixture throttiing valve, a yieidable connection between saidthrottiing valve and said base,

and means for swinging said engine about 10 its pivotal point whereuponsald throttlmg valve is opened at the same time.

